Product Description

✏NOTE

The recommended method of accessing the date in systems with Intel desktop boards is indirectly from the Real-Time Clock (RTC) via the BIOS. The BIOS on Intel desktop boards contains a century checking and maintenance feature. This feature checks the two least significant digits of the year stored in the RTC during each BIOS request (INT 1Ah) to read the date and, if less than 80 (i.e., 1980 is the first year supported by the PC), updates the century byte to 20. This feature enables operating systems and applications using the BIOS date/time services to reliably manipulate the year as a four-digit value.

For information about

Refer to

Proper date access in systems with Intel desktop boards

http://support.intel.com/support/year2000/

 

 

1.7 I/O Controller

The SMSC LPC47M102 I/O controller provides the following features:

∙Low pin count (LPC) interface

∙One serial port

∙Infrared (IrDA) interface

∙Intelligent power management, including a programmable wake up event interface

∙Fan control:

⎯One pulse width modulation (PWM) fan speed control output

⎯One fan tachometer input

The BIOS Setup program provides configuration options for the I/O controller.

For information about

SMSC LPC47M102 I/O controller

The IrDA interface

Refer to

http://www.smsc.com

Section 2.8.3, page 46

1.8 Serial Debug Port

The board has one 9-pin serial debug port connector. The serial debug port’s NS16C550-compatible UART supports data transfers at rates of up to 115.2 kbits/sec with BIOS support. The serial debug port can be assigned as COM1 (3F8h), COM2 (2F8h), COM3 (3E8h), or COM4 (2E8h).

For information about

The location of the serial debug port connector

The signal names of the serial debug port connector

Refer to

Figure 5, page 41

Table 26, page 43

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